Preheat oven 325. Grease and flour a 10 inch tube pan. Whisk flour and baking soda together. In a large bowl,cream butter, cream cheese, white sugar and brown sugar until creamy and thoroughly combined. beat in eggs one at a time mixing completely before adding the next one. Stir in vanilla with the espresso powder in a small bowl and add to the butter mixture. Stir until well combined. Stir in flour mixture 1/2 cup at a time beat until thoroughly incorporated. Stir in chopped chocolate. Spoon batter into prepared cake pan. Bake 1 1/2 hours, I start checking after 1 hour 15 minutes and with my oven it was almost done, waited 5 more minutes. Cool cake in pan 15 minutes before removing. Dust with confectioners sugar or glaze, whichever you prefer.